<template>
    <div>
         <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/roles' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域    -->
        <el-card class="box-card">
            <!-- 添加角色按钮区域 -->
            <el-row>
              <el-col>
                  <el-button type="primary" 
                  @click="addRoleDialogVisible=!addRoleDialogVisible">添加角色</el-button>
              </el-col>
            </el-row>
            <!-- 角色列表区域 -->
             <el-table :data='rolesList' border stripe class="rolesTable">
                <!-- 展开列 -->
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']"
                             v-for="(item1, i1) in scope.row.children" :key="item1.id">
                            <!-- 一共24列 一级占用6列 渲染一级权限 -->
                          <el-col :span="5">
                              <el-tag
                                    closable
                                    @close="removeRightById(scope.row,item1.id)">
                                    {{item1.authName}}</el-tag>
                              <i class="el-icon-caret-right"></i>
                          </el-col>

                          <!-- 渲染二级 三级权限 -->
                          <el-col :span="19">
                              <!-- 通过for循环 嵌套渲染二级权限 -->
                              <el-row :class="[i2===0?'':'bdtop','vcenter']" 
                                      v-for="(item2,i2) in item1.children" :key="item2.id">
                                <el-col :span="6">
                                    <el-tag 
                                        type="success"
                                        closable
                                        @close="removeRightById(scope.row,item2.id)">
                                        {{item2.authName}}</el-tag>
                                    <i class="el-icon-caret-right"></i>
                                </el-col>
                                <!-- 三级权限 使用 
                                closable 可关闭图标-->
                                <el-col :span="18">
                                    <el-tag 
                                        closable 
                                        type="warning" 
                                        v-for="(item3,i3) in item2.children" :key="item3.id"
                                        @close="removeRightById(scope.row,item3.id)">
                                        {{item3.authName}}
                                    </el-tag>

                                </el-col>
                              </el-row>

                          </el-col>  
                        </el-row>
                        <!-- <pre>{{scope.row}}</pre> -->
                        
                    </template>
                </el-table-column>
                <!-- 索引列 -->
                <el-table-column type="index"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px" >
                    <template slot-scope="scope">
                       <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">编辑</el-button>
                       <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeRoleById(scope.row.id)">删除</el-button>
                       <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                 
                </el-table-column>
            </el-table>
        </el-card>

        <!-- 添加角色对话框 -->
        <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible"  width="50%"
        @close="addRoleDialogClosed">
            内容主体区域
                <el-form :model="addRoleForm" :rules="addRoleFormRules" 
                ref="addRoleFormRef" label-width="100px" >
                    <el-form-item label="角色名称" prop="roleName">
                        <el-input v-model="addRoleForm.roleName"></el-input>
                    </el-form-item>
                    <el-form-item label="角色描述" prop="roleDesc">
                        <el-input v-model="addRoleForm.roleDesc"></el-input>
                    </el-form-item>
                </el-form>
            底部区域
            <span slot="footer" class="dialog-footer">
                点击取消按钮出发 对话框隐藏事件  @click
                <el-button @click="addRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addRoles" >确 定</el-button>
            </span>
        </el-dialog> 

         <!-- 添加角色对话框 -->
        <el-dialog title="添加角色" :visible.sync="addRoleDialogVisible"  width="50%"
        @close="addRoleDialogClosed">
           <table data-sort="sortDisabled">
    <tbody>
        <tr class="firstRow">
            <td width="231" valign="top" style="word-break: break-all;">
                姓名
            </td>
            <td width="231" valign="top"></td>
            <td width="231" valign="top" rowspan="2" style="word-break: break-all;">
                头像
            </td>
            <td width="231" valign="top" rowspan="2"></td>
        </tr>
        <tr>
            <td width="231" valign="top" style="word-break: break-all;">
                部门
            </td>
            <td width="231" valign="top"></td>
        </tr>
        <tr>
            <td width="231" valign="top" style="word-break: break-all;">
                地址
            </td>
            <td valign="top" colspan="3"></td>
        </tr>
        <tr>
            <td valign="top" colspan="1" rowspan="3" style="word-break: break-all;">
                手机号
            </td>
            <td valign="top" colspan="1" rowspan="3"></td>
            <td valign="top" colspan="1" rowspan="3" style="word-break: break-all;">
                固话
            </td>
            <td valign="top" colspan="1" rowspan="3"></td>
        </tr>
        <tr></tr>
        <tr></tr>
        <tr>
            <td valign="top" colspan="1" rowspan="1" style="word-break: break-all;">
                负责事项
            </td>
            <td valign="top" colspan="3" rowspan="1"></td>
        </tr>
    </tbody>
</table>
        </el-dialog>

          <!-- 编辑角色对话框 -->
        <el-dialog title="编辑角色" :visible.sync="editRoleDialogVisible"  width="50%"
        @close="editRoleDialogClosed">
            <!-- 内容主体区域 -->
                <el-form :model="editRoleForm" :rules="editRoleFormRules" 
                ref="editRoleFormRef" label-width="100px" >
                    <el-form-item label="角色名称" prop="roleName">
                        <el-input v-model="editRoleForm.roleName"></el-input>
                    </el-form-item>
                    <el-form-item label="角色描述" prop="roleDesc">
                        <el-input v-model="editRoleForm.roleDesc"></el-input>
                    </el-form-item>
                </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <!-- 点击取消按钮出发 对话框隐藏事件  @click-->
                <el-button @click="editRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editRoles" >确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配权限的对话框 -->
        <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%"
            @close="setRightDialogClosed">
            <!-- 树形控件 -->
            <el-tree 
                ref="treeRef"
                :data="rightsList" 
                :props="treeProps"
                show-checkbox
                node-key="id"
                default-expand-all
                :default-checked-keys="defKeys"
                ></el-tree>
                <!-- default-checked-keys="defKeys"  -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data(){
        return{
            // 所有
            rolesList:[],

            // 控制添加添加角色对话框的显示与隐藏
            addRoleDialogVisible:false,
            // 添加角色表单
            addRoleForm:{},
            // 添加角色表单验证
            addRoleFormRules:{
                roleName:[
                    {required:true,message:'请输入角色名称', trigger: 'blur'}
                ],
                roleDesc:[
                    {required:true,message:'请输入角色描述', trigger: 'blur'}
                ]
            },
            //控制添加编辑角色对话框的显示与隐藏
            editRoleDialogVisible:false,
            //编辑角色表单
            editRoleForm:{},
             // 编辑角色表单验证
            editRoleFormRules:{
                roleName:[
                    {required:true,message:'请输入角色名称', trigger: 'blur'}
                ],
                roleDesc:[
                    {required:true,message:'请输入角色描述', trigger: 'blur'}
                ]
            },

            //控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            //所有权限的数据
            rightsList:[],

            //树形控件的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },

            //默认选中的节点id值数组
            defKeys:[],

            //当前即将分配权限角色的id
            roleId:'',
        }
    },
    methods: {
        //获取角色列表
       async getRolesList(){
          const{data:res} =await this.$http.get('/roles')
          if(res.meta.status!==200){
              return this.$message.error('获取角色列表失败！')
          }
          this.rolesList=res.data
          console.log(this.rolesList)
          
        },

        // 添加角色对话框的关闭
        addRoleDialogClosed(){
            this.$refs.addRoleFormRef.resetFields()

        },
         // 添加角色
        addRoles(){
            this.$refs.addRoleFormRef.validate( async valid=>{
                if(!valid) return
                const {data:res}=await this.$http.post('roles',this.addRoleForm)
                if(res.meta.status!==201){
                    this.$message.error('添加角色失败！')
                }
                this.$message.success('添加角色成功！')
                this.addRoleDialogVisible = false
                this.getRolesList()
            })
        },

        //编辑角色对话框的关闭
        editRoleDialogClosed(){
            this.$refs.editRoleFormRef.resetFields()

        },
        //编辑对话框 先获取再编辑
       async showEditDialog(id){
          const{data:res}= await this.$http.get('roles/'+id)
          if(res.meta.status!==200){
              return this.$message.error('查询角色信息失败！')
          }
          this.editRoleForm = res.data
          this.editRoleDialogVisible = true

        },
        editRoles(){
            this.$refs.editRoleFormRef.validate(async valid=>{
                if(!valid) return
                const{data:res}=await this.$http.put('roles/'+this.editRoleForm.roleId,
                {   //请求参数
                    roleName: this.editRoleForm.roleName,
                    roleDesc: this.editRoleForm.roleDesc
                })
                if(res.meta.status!==200){
                    this.$message.error('更新信息失败！')
                }
                this.editRoleDialogVisible=false
                this.$message.success('更新信息成功！')
                this.getRolesList()
            })
        },
        //删除角色
        async  removeRoleById (role,rightId){
            const confirmResult=await this.$confirm(
                '此操作将永久删除该角色, 是否继续?',
                '提示',
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
           }).catch(err => err)
                if (confirmResult !== 'confirm') {
                    return this.$message.info('已取消删除')
                }
                // 1.5.7. 删除角色指定权限 请求路径：roles/:roleId/rights/:rightId
               //请求方法：delete请求参数
            const{data:res}= await this.$http.delete('roles/${role.id}/rights/${rightId}')
            if(res.meta.status!==200){
                return this.$message.error('删除权限失败！')
            }
            // this.getRolesList()
            // 如果使用getRolesList确认删除后权限页面就会关闭 返回到http://localhost:8080/#/roles页面
            //为了让页面保留在当前 我们采用 为当前角色信息重新赋值权限
            role.children=res.data
        },

        //根据id删除对应的权限
        async removeRightById(){
            //弹框提示用户是否删除
            const confirmResult=await this.$confirm(
                '此操作将永久删除该角色, 是否继续?',
                '提示',
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
           }).catch(err => err)
                if (confirmResult !== 'confirm') {
                    return this.$message.info('已取消删除')
                }
                // console.log("确认了删除")
        },
        //展示分配权限的对话框
        async showSetRightDialog(role){
            this.roleId=role.id
            //获取所有权限数据
            //1.4.1. 所有权限列表 请求路径：rights/:type 请求方法：get 请求参数
           const{data:res}= await this.$http.get('rights/tree')
           if(res.meta.status!==200){
               return this.$message.error('获取权限数据失败！')
           }
           //获取到的权限数据保存到data中
           this.rightsList=res.data
           console.log(this.rightsList)

           //递归获取三级节点的id
           this.getLeafKeys(role,this.defKeys)
           this.setRightDialogVisible=true
        },

        //通过递归的形式获取角色下的所有三级权限的id 并保存到defKeys数组中
        getLeafKeys(node,arr){
            if(!node.children){
                //如果当前节点不包含children属性 则是三级节点
                return arr.push(node.id)
            }
            node.children.forEach(item => 
                this.getLeafKeys(item,arr));
        },

        //监听分配权限对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]
        },
   
       // 分配权限
        async allotRights (roleId) {
        // 获得当前选中和半选中的Id
        const keys = [
            ...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys()
        ]
        // join() 方法用于把数组中的所有元素放入一个字符串
        const idStr = keys.join(',')
        const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
        if (res.meta.status !== 200) { return this.$message.error('分配权限失败！') }
        this.$message.success('分配权限成功!')
        this.getRolesList()
        this.setRightDialogVisible = false
        }
    },
    created(){
        this.getRolesList()

    }
    
}
</script>

<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.rolesTable{
   margin: 7px; 
}

.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee ;

}
.vcenter{
    display: flex;
    align-items: center;
}

</style>